#Instagram312: One of the most popular Instagram hashtags in Chicago for 4 years.

There are all kinds of great examples of hashtags that last a day or a week and get plenty of engagement, but the ones that last and become part of the social media landscape are the ones that matter most. Whether it's something like #Instagram312 or #TBT or #TravelTuesday, it's something people remember. THAT'S what you want your social media to be: Memorable.